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A sink is where a watercourse disappears into the ground, whereas an issue (Iss) is where ground water is released, as in a spring.

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Was does a black p stand for on an ordinance survey map indicate?

A black "P" on an Ordnance Survey map typically indicates a public house or pub. It signifies a place where individuals can find food, beverages, and sometimes accommodation.


Where can one find an Ordanance Survey?

You can find Ordnance Survey maps and products on their official website, at outdoor and map retailers, or at some tourism information centers in the UK. Additionally, some libraries may also have copies of Ordnance Survey maps for reference.


When was Ordnance Survey created?

Ordnance Survey is an executive agency of the United Kingdom government. It is the national mapping agency for Great Britain, and one of the world's largest producers of maps. The name reflects the original military purpose of the organization (see ordnance and surveying) in mapping Britain during the Napoleonic Wars when there was a threat of invasion from France, and its logo includes the War Department's broad arrow heraldic mark. source: http://en.wikipedia.org/wiki/Ordnance_Survey


What is ordinance survey map?

During the English civil war Oliver Cromwell, leader of the Parliamentarian side discovered that he had great difficulty hitting anything with his artillery. He realised that the root of the problem was the very poor quality of the available maps of England. When his side won the war and he became a dictator he set up a government controlled and funded organisation to carry out a proper survey of the country. Because it was intended for use by artillery, it was called the Ordnance Survey. The English decided that one civil war was more than enough, so the artillery never needed these maps, but all sorts of other people did. The O.S. still exists and keeps the maps up to date. Their maps are widely available and very popular.


What is great trigonometrical survey?

The Great Trigonometrical Survey was a project in 19th century British India to measure and map the entire Indian subcontinent with high accuracy. It involved measuring angles and distances between predetermined points to create a topographical map of the region. The survey laid the foundation for modern mapping and land survey techniques.